Just ask about:
Size you want to achieve
what type of implant will suit you best
whether you will have unders or overs
the look you are wanting, e.g fake, high, natural, round, teardrop
what projection you will have, i.e. medium, high, extra high
If they can then ask to try the sizing kit on to get an idea
I cant really remember anything else as it was 10 weeks ago now lol but hope that helps! xxx